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| Head Work https://slantsix.org/forum/viewtopic.php?t=44404 |
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| Author: | stealth swinger [ Fri Apr 08, 2011 6:35 pm ] |
| Post subject: | Head Work |
Good evening all, I pulled the motor out of the Swinger this week. Took some measurements, and this is what I have. deck hgt. .179 chamber 47 cc bore 3.44 stock valves 1.36/1.62 looking for 40 cc's, another.050 off should get me that, and a set of direct fit big valves[direct fit length and diamiter]. With a felpro gasket I should get about 9.5:1 CR. Does this sound correct? Thanks always for your help. |
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| Author: | Slant Cecil [ Fri Apr 08, 2011 7:52 pm ] |
| Post subject: | |
Based on a 3.50 bore, .034 thick Fel Pro, I get, 8.89 with 47cc 9.66 with 40cc |
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| Author: | stealth swinger [ Sat Apr 09, 2011 3:01 am ] |
| Post subject: | |
Bore is 3.44. .040 over. Looking for the same size stem, in a bigger valve. |
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| Author: | Charrlie_S [ Sat Apr 09, 2011 4:47 am ] |
| Post subject: | |
Very reliable E-bay seller. http://cgi.ebay.com/ebaymotors/225-slan ... 5adfdde0ae Also has a listing for these same valves, with 340 type valve springs, and locks, as a package deal. |
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| Author: | Slant Cecil [ Sat Apr 09, 2011 7:09 am ] |
| Post subject: | |
Quote: Bore is 3.44. .040 over. Looking for the same size stem, in a bigger valve. When I posted 3.50 bore, that was for the Fel Pro. I used 3.44 cyl bore for the CR calc. |
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| Author: | 1974duster kev [ Sat Apr 09, 2011 12:43 pm ] |
| Post subject: | |
Yep ebay eng builders valves i have two heads with them in. Curious has anyone ever flowed a head before and after the install of bigger valves what kinda gains based on just a bigger valve? Kev |
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